Absent, empty, or incomplete security list

versions/3.0.4.md

@@ -258,7 +258,7 @@ This is the root object of the [OpenAPI document](#openapi-description).
 | <a name="oas-servers"></a>servers | [[Server Object](#server-object)] | An array of Server Objects, which provide connectivity information to a target server. If the `servers` field is not provided, or is an empty array, the default value would be a [Server Object](#server-object) with a [url](#server-url) value of `/`. |
 | <a name="oas-paths"></a>paths | [Paths Object](#paths-object) | **REQUIRED**. The available paths and operations for the API. |
 | <a name="oas-components"></a>components | [Components Object](#components-object) | An element to hold various schemas for the document. |
-| <a name="oas-security"></a>security | [[Security Requirement Object](#security-requirement-object)] | A declaration of which security mechanisms can be used across the API. The list of values includes alternative Security Requirement Objects that can be used. Only one of the Security Requirement Objects need to be satisfied to authorize a request. Individual operations can override this definition. To make security optional, an empty security requirement (`{}`) can be included in the array. |
+| <a name="oas-security"></a>security | [[Security Requirement Object](#security-requirement-object)] | A declaration of which security mechanisms can be used across the API. The list of values includes alternative Security Requirement Objects that can be used. Only one of the Security Requirement Objects need to be satisfied to authorize a request. Individual operations can override this definition. The list can be incomplete, up to being empty or absent. To make security explicitly optional, an empty security requirement (`{}`) can be included in the array. |
 | <a name="oas-tags"></a>tags | [[Tag Object](#tag-object)] | A list of tags used by the document with additional metadata. The order of the tags can be used to reflect on their order by the parsing tools. Not all tags that are used by the [Operation Object](#operation-object) must be declared. The tags that are not declared MAY be organized randomly or based on the tools' logic. Each tag name in the list MUST be unique. |
 | <a name="oas-external-docs"></a>externalDocs | [External Documentation Object](#external-documentation-object) | Additional external documentation. |